2ADAKXBR5100D5HIXBR Base Station Transceiver

Copyright © Etherstack Pty Ltd 2025 This is the confidential proprietary property of Etherstack Pty Ltd. This document is protected by copyright. No part of it may be reproduced or copied without the prior written permission of Etherstack Pty Ltd. Etherstack Pty Ltd products are supplied under licence and may be used only in accordance with the terms of the contractual agreement between Etherstack Pty Ltd and the licence holder. All products, brand names and trademarks referred to in this publication are the property of Etherstack Pty Ltd or third-party owners. Unauthorised use may constitute an infringement. Etherstack Pty Ltd reserves the right to change information contained in this publication without notice. All efforts have been made to ensure accuracy however Etherstack Pty Ltd does not assume responsibility for errors or for any consequences arising from errors in this publication. Etherstack Pty Ltd 64 Rose Street Chippendale NSW 2008 AUSTRALIA Email:[email protected] P:+61 2 8399 7500 F:+61 2 8399 7507 Etherstack XBR5100 Fully Integrated P25 Base-Station Technical Manual Document Version: 1.03 Document ID: ES2202-UM01 Author: Etherstack Created: 05 June, 2025 Last Updated:25 September, 2025 Last Updated by: Etherstack Doc Ref: ES2202-UM01_v103 Etherstack Proprietary Information Page: 2 of 17 Date: 25 September 2025 © Etherstack Pty Ltd. 2025 Copyright Etherstack Pty Ltd ARBN 156 640 532 64 Rose Street Chippendale NSW 2008 Australia Ph: +61 (0)2 8399 7500 Fax: +61 (0)2 8399 7507 [email protected] www.etherstack.com Etherstack reserves the right to alter, without notice and at any time, the equipment and specifications described in this document. All performance figures quoted are typical and are subject to normal manufacturing and service tolerances. The purchaser is advised that some statements made in this document may be inaccurate due to typographical or other errors or subsequent modifications of the product. While every care has been taken in the creation of this document, no warranty of accuracy or reliability is given, in any advice or information contained in this document. Etherstack Pty Ltd or any director, officer, agent, or employee of Etherstack Pty Ltd cannot be held liable for any loss or damage whatsoever arising in any way or any representation, act or omission whether express or implied (including responsibility to any person by reason of negligence). Copyright © Etherstack Pty Ltd 2025 This work is copyright. Other than as permitted by Law, no part of it may be reproduced, stored in a retrieval system, or transmitted in any form or by any process without prior written permission. Doc Ref: ES2202-UM01_v103 Etherstack Proprietary Information Page: 3 of 17 Date: 25 September 2025 © Etherstack Pty Ltd. 2025 Regulatory Information FCC Compliance This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired operation. FCC Interference Warning Note: This equipment generates, uses, and can radiate radio frequency energy. If not installed and used in accordance with this instruction manual, it may cause harmful interference to other radio communications. Harmful interference is any emission, radiation or induction that endangers the functioning of a radio navigation service or of other safety services or seriously degrades, obstructs, or repeatedly interrupts a radio communications service operating in accordance CFR Title 47 Part 15. INDUSTRY CANADA COMPLIANCE (ISED) This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device. FRENCH: Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est autorisée aux deux conditions suivantes : (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement. HUMAN EXPOSURE TO RADIO FREQUENCY RADIATION USA Customers - Warning to comply with the maximum permissible exposure (MPE) limits referenced in 47 CFR 1.1310, the following minimum safe operating distances must be observed: MODEL(s)/FCC ID FREQ. RANGE OPERATION SAFE OPERATING DISTANCES*1 Measurement Reference*2 XBR5100P5VI / 2ADAKXBR5100P5VI 450-520 MHz 2.567 m 120 watts at 450MHz XBR5100D5HI / 2ADAKXBR5100D5HI 136-174MHz 2.223 m 60 watts at 136MHz XBR5110D5VI / 2ADAKXBR5110D5VI 136-174MHz 3.144 m 120 watts at 136MHz XBR5100T5VI / 2ADKXBR5100T5VI 763-776 MHz 850-870 MHz 1.971 m 120 watts at 763MHz XBR5100N5VI / 2ADKXBR5100T5VI 400-470 MHz 2.723 m 120 watts at 400MHz Doc Ref: ES2202-UM01_v103 Etherstack Proprietary Information Page: 4 of 17 Date: 25 September 2025 © Etherstack Pty Ltd. 2025 Canada Customers - The XBR5100 radio transmitter has been approved by Innovation, Science and Economic Development Canada to operate with the maximum permissible exposure (MPE) limits defined in Radio Communication Apparatus (All Frequency Bands) , RSS-102, Issue 6. The following minimum safe operating distances must be observed: MODEL(s)/ISED ID FREQ. RANGE OPERATION SAFE OPERATING DISTANCES*1 Measurement Reference*2 XBR5100P5VI / 9487A-XBR5100P5VI 450-520 MHz 3.407 m 120 watts at 450MHz XBR5100D5HI / 9487A-XBR5100D5HI 136-174MHz 2.767 m 60 watts at 136MHz XBR5110D5VI / 9487A-XBR5110D5VI 136-174MHz 3.913 m 120 watts at 136MHz XBR5100T5VI / 9487A-XBR5100T5VI 763-776 MHz 850-870 MHz 2.844 m 120 watts at 763MHz XBR5100N5VI / 9487A-XBR5100T5VI 400-470 MHz 3.546 m 120 watts at 400MHz *1 The distance measured from the transmitter antenna. T…

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P2540016.1_FCC_ Part 1.1310_Rev 2.0 Page 1 of 6 Test Report Prepared for: Etherstack, Inc Model: XBR5100D5HI Description: XBR Base Station Transceiver FCC ID:2ADAKXBR5100D5HI Serial Number: 240900067 Project No: p2540016.1 Test Results: Pass To FCC Part 1.1310 Date of Issue: June 30, 2025 On the behalf of the applicant: Etherstack Inc 16 Madison Square W. FL12 Suite 1200 New York, NY 10010 Attention of: Doug Chapman Ph: (917) 258-6601 E-Mail: [email protected] Prepared By: Compliance Testing, LLC Mesa, AZ 85204 (480) 926-3100 phone / (480) 926-3598 fax www.compliancetesting.com ANAB Cert#: AT-2901 FCC Site Reg.750616 ISED Site Reg. #2044A-2 John Michalowicz Project Test Engineer This report may not be reproduced, except in full, without written permission from Compliance Testing All results contained herein relate only to the sample tested P2540016.1_FCC_ Part 1.1310_Rev 2.0 Page 2 of 6 Test Report Revision History Revision Date Revised By Reason for Revision Rev 1.0 6/30/2025 John Michalowicz Original Document Rev 2.0 8/15/2025 Greg Corbin Added statements to test data section on page 6 Corrected minimum safe distance on page 7 P2540016.1_FCC_ Part 1.1310_Rev 2.0 Page 3 of 6 ANAB Compliance Testing, LLC, has been accredited in accordance with the recognized International Standard ISO/IEC 17025:2017. This accreditation demonstrates technical competence for a defined scope and the operation of a laboratory quality management system (refer to the joint ISO-ILAC-IAF Communiqué dated January 2009). The tests results contained within this test report all fall within our scope of accreditation, unless noted below. Please refer to http://www.compliancetesting.com/labscope.html for current scope of accreditation. FCC Site Reg. #750616 IC Site Reg. #2044A-2 Non-accredited tests contained in this report: N/A P2540016.1_FCC_ Part 1.1310_Rev 2.0 Page 4 of 6 EUT Description Model: XBR5100D5HI Serial: 240900067 Firmware: 0.2.04_1 Software: N/A Description: XBR Base Station Transceiver Additional Information: The EUT is a 50-watt base station transceiver using FM and C4FM modulation operating in the VHF band as noted in Table 1. Power 13.8 vdc Receipt of Sample(s): 6/02/2025 EUT Condition: Visual Damage No State of Development Production/Production Equivalent P2540016.1_FCC_ Part 1.1310_Rev 2.0 Page 5 of 6 MPE Evaluation The EUT is a mobile device used in an Uncontrolled Exposure environment. Limits Uncontrolled Exposure 47 CFR 1.1310 Table 1, (ii) 0.3-1.34 MHz: Limit [mW/cm²] = 100 1.34-30 MHz: Limit [mW/cm²] = (180/f²) 30-300 MHz: Limit [mW/cm²] = 0.2 300-1500 MHz: Limit [mW/cm²] = f/1500 1500-100,000 MHz Limit [mW/cm²] = 1.0 Test Data Worst case RF exposure calculations were calculated using the highest gain antenna and the higher of the measured output power or the rated output power. In this case, the measured output power was used for the MPE and Minimum Safe Distance calculation. The limit for this frequency range is fixed and not dependent on the test frequency. The test frequency entered in the table corresponds to the frequency with the highest output power. MPE calculation Test Frequency, MHz 173.3875 Power,EIRP mW (P) 55340 Antenna Gain Isotropic 3.16 dBi Antenna Gain Numeric (G) 2.07 Antenna Type dipole Distance (R) 20 cm 푆= 푃∗퐺 4휋푟 2 Power Density (S) mw/cm 2 Power Density (S) =22.790 mW/cm 2 Limit = (from above table) = 0.200 mW/cm 2 ` The EUT Power Density of 22.790 mW/cm 2 is over the limit of 0.200 mW/cm 2 with a 3.16 dBi gain antenna at 20 cm distance. The Minimum Safe Distance was calculated on the next page. P2540016.1_FCC_ Part 1.1310_Rev 2.0 Page 6 of 6 Minimum Safe Distance Evaluation This is a mobile device used in Uncontrolled Exposure environment. Limits Uncontrolled Exposure 47 CFR 1.1310 Table 1, (B) 0.3-1.34 MHz: Limit [mW/cm²] = 100 1.34-30 MHz: Limit [mW/cm²] = (180/f²) 30-300 MHz: Limit [mW/cm²] = 0.2 300-1500 MHz: Limit [mW/cm²] = f/1500 1500-100,000 MHz Limit [mW/cm²] = 1.0 Test Data Test Frequency, MHz 173.3875 Power, Conducted, mW (P) 55340 Antenna Gain Isotropic 3.16 dBi Antenna Gain Numeric (G) 2.07 Antenna Type dipole Limit (L) 0.200 mW/cm 2 R=√(PG/4πL) Distance (R) cm Power mW (P) Numeric Gain (G) Limit (L) 213.5 cm 55340 2.07 0.200 The minimum safe distance is 213.5 cm for a 3.16 dBi gain antenna. END OF TEST REPORT

Test Setup Photos FCC ID: 2ADAKXBR5100D5HI ISED ID: 9487A-XBR5100D5HI Conducted RF Conducted RF Test Setup Photos FCC ID: 2ADAKXBR5100D5HI ISED ID: 9487A-XBR5100D5HI Radiated RF Radiated RF Test Setup Photos FCC ID: 2ADAKXBR5100D5HI ISED ID: 9487A-XBR5100D5HI Frequency Stability #1 Frequency Stability #2

P2540016.1_Annex F _ Rev 2.0 Page 1 of 16 Annex F Output Power P2540016.1_Annex F _ Rev 2.0 Page 2 of 16 C4FM_1w_N_138.0125 MHz C4FM_1w_N_150.8125MHz P2540016.1_Annex F _ Rev 2.0 Page 3 of 16 C4FM_1w_N_153.11 MHz C4FM_1w_N_161.5625MHz P2540016.1_Annex F _ Rev 2.0 Page 4 of 16 C4FM_1w_N_173.3875MHz C4FM_50w_N_138.0125MHz P2540016.1_Annex F _ Rev 2.0 Page 5 of 16 C4FM_50w_N_150.8125MHz C4FM_50w_N_153.11 MHz P2540016.1_Annex F _ Rev 2.0 Page 6 of 16 C4FM_50w_N_161.5625MHz C4FM_50w_N_173.3875MHz P2540016.1_Annex F _ Rev 2.0 Page 7 of 16 CW_1w_N_138.0125 MHz CW_1w_N_150.8125 MHz P2540016.1_Annex F _ Rev 2.0 Page 8 of 16 CW_1W_N_153.11 MHz CW_1w_N_161.5625 MHz P2540016.1_Annex F _ Rev 2.0 Page 9 of 16 CW_1w_N_173.3875 MHz CW_1w_W_138.0125MHz P2540016.1_Annex F _ Rev 2.0 Page 10 of 16 CW_1w_W_150.8125 MHz CW_1W_W_153.11 MHz P2540016.1_Annex F _ Rev 2.0 Page 11 of 16 CW_1w_W_161.5625 MHz CW_1w_W_173.3875 MHz P2540016.1_Annex F _ Rev 2.0 Page 12 of 16 CW_50w_N_138.0125 MHz CW_50w_N_150.8125 MHz P2540016.1_Annex F _ Rev 2.0 Page 13 of 16 CW_50W_N_153.11 MHz CW_50w_N_161.5625 MHz P2540016.1_Annex F _ Rev 2.0 Page 14 of 16 CW_50w_N_173.3875 MHz CW_50w_W_138.0125 MHz P2540016.1_Annex F _ Rev 2.0 Page 15 of 16 CW_50w_W_150.8125 MHz CW_50W_W_153.11 MHz P2540016.1_Annex F _ Rev 2.0 Page 16 of 16 CW_50w_W_161.5625 MHz CW_50w_W_173.3875 MHz

P2540016.1_Annex E _ Rev 1.0 Page 1 of 3 Annex E Transient Frequency Behavior P2540016.1_Annex E _ Rev 1.0 Page 2 of 3 TFB_NB_ Off time_T3 TFB_NB_ On time_Ton_T1_T2 P2540016.1_Annex E _ Rev 1.0 Page 3 of 3 TFB_WB_ Off time_T3 TFB_WB_ On time_Ton_T1_T2

P2540016.1_Annex D _ Rev 2.0 Page 1 of 9 Annex D Occupied Bandwidth P2540016.1_Annex D _ Rev 2.0 Page 2 of 9 Occ BW_C4FM_138.0125 MHz Occ BW_C4FM_150.8125 MHz P2540016.1_Annex D _ Rev 2.0 Page 3 of 9 Occ BW_C4FM_153.11 MHz Occ BW_C4FM_161.5625 MHz P2540016.1_Annex D _ Rev 2.0 Page 4 of 9 Occ BW_C4FM_173.3875 MHz Occ BW_NB_138.0125 MHz P2540016.1_Annex D _ Rev 2.0 Page 5 of 9 Occ BW_NB_150.8125 MHz Occ BW_NB_153.11 MHz P2540016.1_Annex D _ Rev 2.0 Page 6 of 9 Occ BW_NB_161.5625 MHz Occ BW_NB_173.3875 MHz P2540016.1_Annex D _ Rev 2.0 Page 7 of 9 Occ BW_WB_138.0125 MHz Occ BW_WB_150.8125 MHz P2540016.1_Annex D _ Rev 2.0 Page 8 of 9 Occ BW_WB_153.11 MHz Occ BW_WB_161.5625 MHz P2540016.1_Annex D _ Rev 2.0 Page 9 of 9 Occ BW_WB_173.3875 MHz

P2540016.1_Annex C _ Rev 4.0 Page 1 of 16 Annex C Emission Mask P2540016.1_Annex C _ Rev 4.0 Page 2 of 16 Mask B_WB_50W_138.0125 MHz Mask B_WB_50W_150.8125 MHz P2540016.1_Annex C _ Rev 4.0 Page 3 of 16 Mask B_WB_50W_153.11 MHz Mask B_WB_50W_161.5625 MHz P2540016.1_Annex C _ Rev 4.0 Page 4 of 16 Mask B_WB_50W_173.3875 MHz Mask D_C4FM_50W_138.0125 MHz P2540016.1_Annex C _ Rev 4.0 Page 5 of 16 Mask D_C4FM_50W_150.8125 MHz Mask D_C4FM_50W_153.11 MHz P2540016.1_Annex C _ Rev 4.0 Page 6 of 16 Mask D_C4FM_50W_161.5625 MHz Mask D_C4FM_50W_173.3875MHz P2540016.1_Annex C _ Rev 4.0 Page 7 of 16 MaskB_1W_WB_138.0125 MHz MaskB_1W_WB_150.8125 MHz P2540016.1_Annex C _ Rev 4.0 Page 8 of 16 MaskB_1W_WB_153.11 MHz MaskB_1W_WB_161.5625 MHz P2540016.1_Annex C _ Rev 4.0 Page 9 of 16 MaskB_1W_WB_173.3875 MHz MaskD_C4FM_1W_153.11 MHz P2540016.1_Annex C _ Rev 4.0 Page 10 of 16 MaskD_C4FM_1w_N_138.0125MHz MaskD_C4FM_1w_N_150.8125MHz P2540016.1_Annex C _ Rev 4.0 Page 11 of 16 MaskD_C4FM_1w_N_161.5625MHz MaskD_C4FM_1w_N_173.3875MHz P2540016.1_Annex C _ Rev 4.0 Page 12 of 16 MaskD_NB_50W_138.0125 MHz MaskD_NB_50W_150.8125 MHz P2540016.1_Annex C _ Rev 4.0 Page 13 of 16 MaskD_NB_50W_153.11 MHz MaskD_NB_50W_161.5625 MHz P2540016.1_Annex C _ Rev 4.0 Page 14 of 16 MaskD_NB_50W_173.3875MHz NB_MaskD_1w_150.8125MHz P2540016.1_Annex C _ Rev 4.0 Page 15 of 16 NB_MaskD_1w_153.11MHz NB_MaskD_1w_161.5625MHz P2540016.1_Annex C _ Rev 4.0 Page 16 of 16 NB_MaskD_1w_173.3875MHz NB_MaskD_1w_N_138.0125MHz

P2540016.1_Annex B _ Rev 1.0 Page 1 of 5 Annex B Radiated Spurious Emission Note: Marker 1 on the 30 – 1000 MHz graphs in Annex B are the fundamental transmit signals and are exempt for the spurious emission limits. P2540016.1_Annex B _ Rev 1.0 Page 2 of 5 RE_1- 6 GHz_138.0125 MHz_ FM_TX On RE_1- 6 GHz_150.8125 MHz_ FM_TX On P2540016.1_Annex B _ Rev 1.0 Page 3 of 5 RE_1- 6 GHz_161.5625 MHz_ FM_TX On RE_1- 6 GHz_173.3875 MHz_ FM_TX On P2540016.1_Annex B _ Rev 1.0 Page 4 of 5 RE_30 - 1000 MHz_138.0125 MHz_ FM_TX On RE_30 - 1000 MHz_150.8125 MHz_ FM_TX On P2540016.1_Annex B _ Rev 1.0 Page 5 of 5 RE_30 - 1000 MHz_161.5625 MHz_ FM_TX On RE_30 - 1000 MHz_173.3875 MHz_ FM_TX On

P2540016.1_Annex A _ Rev 2.0 Page 1 of 17 Annex A Conducted Spurious Emissions Note: Marker 1 on the 30 – 1000 MHz graphs in Annex A are the fundamental transmit signals and are exempt for the spurious emission limits. P2540016.1_Annex A _ Rev 2.0 Page 2 of 17 Conducted Spurious_30 - 1000 MHz_C4FM_138.0125 MHz Conducted Spurious_30 - 1000 MHz_C4FM_150.8125 MHz P2540016.1_Annex A _ Rev 2.0 Page 3 of 17 Conducted Spurious_30 - 1000 MHz_C4FM_153.11 MHz Conducted Spurious_30 - 1000 MHz_C4FM_161.5625 MHz P2540016.1_Annex A _ Rev 2.0 Page 4 of 17 Conducted Spurious_30 - 1000 MHz_C4FM_173.3875 MHz Conducted Spurious_30 - 1000 MHz_NB_138.0125 MHz P2540016.1_Annex A _ Rev 2.0 Page 5 of 17 Conducted Spurious_30 - 1000 MHz_NB_150.8125 MHz Conducted Spurious_30 - 1000 MHz_NB_153.11 MHz P2540016.1_Annex A _ Rev 2.0 Page 6 of 17 Conducted Spurious_30 - 1000 MHz_NB_161.5625 MHz Conducted Spurious_30 - 1000 MHz_NB_173.3875 MHz P2540016.1_Annex A _ Rev 2.0 Page 7 of 17 Conducted Spurious_30 - 1000 MHz_WB_138.0125 MHz Conducted Spurious_30 - 1000 MHz_WB_150.8125 MHz P2540016.1_Annex A _ Rev 2.0 Page 8 of 17 Conducted Spurious_30 - 1000 MHz_WB_153.11 MHz Conducted Spurious_30 - 1000 MHz_WB_161.5625 MHz P2540016.1_Annex A _ Rev 2.0 Page 9 of 17 Conducted Spurious_30 - 1000 MHz_WB_173.3875 MHz Conducted Spurious_1 - 2 GHz_C4FM_138.0125 MHz P2540016.1_Annex A _ Rev 2.0 Page 10 of 17 Conducted Spurious_1 - 2 GHz_C4FM_150.8125 MHz Conducted Spurious_1 - 2 GHz_C4FM_153.11 MHz P2540016.1_Annex A _ Rev 2.0 Page 11 of 17 Conducted Spurious_1 - 2 GHz_C4FM_161.5625 MHz Conducted Spurious_1 - 2 GHz_C4FM_173.3875 MHz P2540016.1_Annex A _ Rev 2.0 Page 12 of 17 Conducted Spurious_1 - 2 GHz_NB_138.0125 MHz Conducted Spurious_1 - 2 GHz_NB_150.8125 MHz P2540016.1_Annex A _ Rev 2.0 Page 13 of 17 Conducted Spurious_1 - 2 GHz_NB_153.11 MHz Conducted Spurious_1 - 2 GHz_NB_161.5625 MHz P2540016.1_Annex A _ Rev 2.0 Page 14 of 17 Conducted Spurious_1 - 2 GHz_NB_173.3875 MHz Conducted Spurious_1 - 2 GHz_WB_138.0125 MHz P2540016.1_Annex A _ Rev 2.0 Page 15 of 17 Conducted Spurious_1 - 2 GHz_WB_150.8125 MHz Conducted Spurious_1 - 2 GHz_WB_153.11 MHz P2540016.1_Annex A _ Rev 2.0 Page 16 of 17 Conducted Spurious_1 - 2 GHz_WB_161.5625 MHz Conducted Spurious_1 - 2 GHz_WB_173.3875 MHz P2540016.1_Annex A _ Rev 2.0 Page 17 of 17 Conducted Spurious_Receiver

P2540016.1_ Part 90_RSS-119_Rev 2.0 Page 1 of 26 Test Report Prepared for: Etherstack, Inc Model: XBR5100D5HI Description: XBR Base Station Transceiver FCC ID:2ADAKXBR5100D5HI ISED ID: 9487A-XBR5100D5HI Serial Number: 240900067 Project No: p2540016.1 Test Results: Pass To FCC Part 22, 74, 80, 90 ISED RSS-119 (issue 12) Date of Issue: June 30, 2025 On the behalf of the applicant: Etherstack Inc 16 Madison Square W. FL12 Suite 1200 New York, NY 10010 Attention of: Doug Chapman Ph: (917) 258-6601 E-Mail: [email protected] Prepared By: Compliance Testing, LLC Mesa, AZ 85204 (480) 926-3100 phone / (480) 926-3598 fax www.compliancetesting.com ANAB Cert#: AT-2901 FCC Site Reg.750616 ISED Site Reg. #2044A-2 John Michalowicz Project Test Engineer This report may not be reproduced, except in f ull, without written permission f rom Compliance Testing. All results contained herein relate only to the sample tested. P2540016.1_ Part 90_RSS-119_Rev 4.0 Page 2 of 27 Test Result Summary Specification Test Name Pass, Fail, N/A Comments FCC ISED 2.1046 22.565 (a) 74.461 80.215 (f )(l) 90.205(s) RSS-119 (5.4) Carrier Output Power (Conducted) Pass 2.1051 22.359 (a) 74.462(C) 80.211 (f ) 90.210(b)(d) RSS-119 (5.8) Unwanted Emissions (Transmitter Conducted) Pass 2.1053 22.359 (a) 74.462(C) 80.211 (f ) 90.210(b)(d) RSS-119 (5.8) Field Strength of Spurious Radiation Pass 2.1049(c) 74.462(C) 80.211 (f ) 90.210(b)(d) RSS-119 (5.5) Emission Masks (Occupied Bandwidth) Pass 2.1047(a) N/A Audio Low Pass Filter (Voice Input) Pass 2.1047(a) N/A Audio Frequency Response Pass 2.1047(b) 74.463(c) N/A Modulation Limiting Pass 2.1055 22.355 74.464 80.209 (a)(7) 90.213(a) RSS-119 (5.3) Frequency Stability (Temperature Variation) Pass 2.1055 90.213(a) 22.355 80.209 (a)(7) 74.464 RSS-119 (5.3) Frequency Stability (Voltage Variation) Pass 90.214 RSS-119 (5.9) Transient Frequency Behavior Pass 2.202 (g) TRC-43 (issue 3) Necessary Bandwidth Calculation Pass Statements of conf ormity are reported as: • Pass - the measured value is below the acceptance limit, acceptance limit = test limit. • Fail - the measured value is above the acceptance limit, acceptance limit = test limit. P2540016.1_ Part 90_RSS-119_Rev 4.0 Page 3 of 27 Test Report Revision History Revision Date Revised By Reason for Revision 1.0 6/30/2025 John Michalowicz Original Document 2.0 8/14/25 Greg Corbin Corrected Typo’s on pages 7 and 9. Updated Audio Filter data on pages 19 and 20 Updated Output power data on page 11 and plots in Annex F Added 1w mask data to annex C Updated Transient Frequency Behavior Table on page 18 and Annex E Updated cal due dates on equipment list on page 26 3.0 9/3/2025 Greg Corbin Add the test frequency “153.11MHz” for Part 74 Updated Output power data on page 11 and plots in Annex F Updated Conducted Spurious Emission data on page 12/13 and plots in Annex A Updated Emission Mask plots in Annex C Updated Occupied Bandwidth data on page 16 and plots in Annex D P2540016.1_ Part 90_RSS-119_Rev 4.0 Page 4 of 27 Table of Contents Description Page Test Result Summary 2 Table of Contents 4 Table of Annexes 4 Standard Test Conditions and Engineering Practices 6 EUT Description 7 Accessories: 9 Modifications: None 9 Carrier Output Power (Conducted) 10 Conducted Spurious Emissions 12 Field Strength of Spurious Radiation 14 Emission Masks 15 Occupied Bandwidth 16 Transient Frequency Behavior 17 Audio Low Pass Filter (Voice Input) 19 Audio Frequency Response 20 Modulation Limiting 21 Frequency Stability (Temperature Variation) 23 Necessary Bandwidth Calculations 25 Measurement Uncertainty 26 Test Equipment Utilized 27 Table of Annexes Description Page Annex F Output Power 11 Annex A Conducted Spurious Emission 13 Annex B Radiated Spurious Emission 14 Annex C Emission Mask 15 Annex D Occupied Bandwidth 16 Annex E Transient Frequency Behavior 18 P2540016.1_ Part 90_RSS-119_Rev 4.0 Page 5 of 27 ANAB Compliance Testing, LLC, has been accredited in accordance with the recognized International Standard ISO/IEC 17025:2017. This accreditation demonstrates technical competence for a defined scope and the operation of a laboratory quality management system (ref er to the joint ISO-ILAC-IAF Communiqué dated January 2009). The tests results contained within this test report all fall within our scope of accreditation, unless noted below. Please ref er to http://www.compliancetesting.com/labscope.html f or current scope of accreditation. FCC Site Reg. #750616 IC Site Reg. #2044A-2 P2540016.1_ Part 90_RSS-119_Rev 4.0 Page 6 of 27 Test and Measurement Data All tests and measurement data shown were performed in accordance with FCC Rules and Regulations, Volume II, Part 2, Subpart J, Sections 2.947, 2.1033(c), 2.1041, 2.1046, 2.1047, 2.1049, 2.1051, 2.1053, 2.1055, 2.1057, ANSI C63.26- 2015, FCC Part 22, 74, 80, 90, RSS-GEN, RSS-119. Standard Test Conditions and Engineering Practices Except as noted herein, the f ollowing conditions and procedures were observed during the testing. In accordance with ANSI/TIA 603C, and unless otherwise indicated in the specif ic measurement results, the ambient temperature of the actual EUT was maintained within the range of 10° to 40°C (50° to 104°F) unless the particular equipment requirements specif ied testing over a dif f erent temperature range. Also, unless otherwise indicated, the humidity levels were in the range of 10% to 90% relative humidity. Environmental Conditions Temp (ºC) Humidity (%) Pressure (mbar) 25.8 – 27.7 22.6 – 31.1 959 – 970.4 Measurement results, unless otherwise noted, are worse case measurements. P2540016.1_ Part 90_RSS-119_Rev 4.0 Page 7 of 27 EUT Description Model: XBR5100D5HI Serial: 240900067 Firmware: 0.2.05_0 Software: N/A HVIN XBR5100D5HI PMN XBR5100 UPN XBR5100D5HI FVIN 0.2.05_0 Description: XBR Base Station Transceiver Additional Information: The EUT is a 50-watt base station transceiver using FM and C4FM modulation operating in the VHF band as noted in Table 1. Power 13.8 vdc Receipt of Sample(s…

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Telephone: +1 (917) 661-4110 16 Madison Square W FL12 Suite 1200 New York, NY 10010 United States of America Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: July 1, 2025 Ref: Attestation Statements Part 2.911(d)(7) Filing FCC ID or Grantee Code: 2ADAKXB R5100D5HI Etherstack Inc. (“the applicant”) certifies that, as of the date o f the filing o f the application, we designate ourselves as the U.S. agent for service of process. Designated U.S. Agent Information: FRN : 0016936114 Name: Etherstack Inc. Address: 16 Madison Squ are West FL12 Suit e 1200 New York NY 1 0010 Contact Pe rson: Doug Chapman Tel.: 917-258- 6601 Email : [email protected] Sincerely, Etherstack Inc. Doug Chapman

Doc Ref: ES2202-ME15_v100 RELEASED Commercial-In-Confidence Page: 1 of 10 Date: 16 July 2025 © Etherstack Pty Ltd, 2025 Technical Memo Subject: Internal Photographs Exhibit Date: 16 July 2025 Doc Ref: ES2202-ME15_v100 Revision: 1.00 RELEASED Overview This document contains the internal photographs of the Etherstack XBR5100 fully integrated P25 base station transceiver equipment. Model: XBR5100D5HI FCC ID: 2ADAKXBR5100D5HI IC ID: 9487A-XBR5100D5HI Doc Ref: ES2202-ME15_v100 RELEASED Commercial-In-Confidence Page: 2 of 10 Date: 16 July 2025 © Etherstack Pty Ltd, 2025 Photo 1 – Chassis Top View Doc Ref: ES2202-ME15_v100 RELEASED Commercial-In-Confidence Page: 3 of 10 Date: 16 July 2025 © Etherstack Pty Ltd, 2025 Photo 2 – Main RF Controller PCB Assembly Top View Doc Ref: ES2202-ME15_v100 RELEASED Commercial-In-Confidence Page: 4 of 10 Date: 16 July 2025 © Etherstack Pty Ltd, 2025 Photo 3 – Main RF Controller PCB Assembly Bottom View Photo 4 – Controller LED PCB Assembly Top View Doc Ref: ES2202-ME15_v100 RELEASED Commercial-In-Confidence Page: 5 of 10 Date: 16 July 2025 © Etherstack Pty Ltd, 2025 Photo 5 – Controller LED PCB Assembly Bottom View Doc Ref: ES2202-ME15_v100 RELEASED Commercial-In-Confidence Page: 6 of 10 Date: 16 July 2025 © Etherstack Pty Ltd, 2025 Photo 6 – PA Module Top View Doc Ref: ES2202-ME15_v100 RELEASED Commercial-In-Confidence Page: 7 of 10 Date: 16 July 2025 © Etherstack Pty Ltd, 2025 Photo 7 – PA PCB Assembly Top View Doc Ref: ES2202-ME15_v100 RELEASED Commercial-In-Confidence Page: 8 of 10 Date: 16 July 2025 © Etherstack Pty Ltd, 2025 Photo 8 – PA PCB Assembly Bottom View Doc Ref: ES2202-ME15_v100 RELEASED Commercial-In-Confidence Page: 9 of 10 Date: 16 July 2025 © Etherstack Pty Ltd, 2025 Photo 9 – XBR Controller PCB Assembly Top View Photo 10 – XBR Controller PCB Assembly Bottom View Doc Ref: ES2202-ME15_v100 RELEASED Commercial-In-Confidence Page: 10 of 10 Date: 16 July 2025 © Etherstack Pty Ltd, 2025 End of Document.

Doc Ref: ES2202-ME17_v100 RELEASE Commercial-In-Confidence Page: 1 of 2 Date: 17 July 2025 © Etherstack Pty Ltd, 2025 Technical Memo Subject: FCC Label Exhibit Date: 17 July 2025 Doc Ref: ES2202-ME17_v100 Revision: 1.00 RELEASE Overview This document contains the description of the Etherstack XBR5100 fully integrated P25 base station transceiver equipment FCC label and position. Model: XBR5100D5HI FCC ID: 2ADAKXBR5100D5HI IC: 9487A-XBR5100D5HI Doc Ref: ES2202-ME17_v100 RELEASE Commercial-In-Confidence Page: 2 of 2 Date: 17 July 2025 © Etherstack Pty Ltd, 2025 XBR5100 Equipment End of Document.

Doc Ref: ES2202-ME16_v100 RELEASE Commercial-In-Confidence Page: 1 of 5 Date: 17 July 2025 © Etherstack Pty Ltd, 2025 Technical Memo Subject: External Photographs Exhibit Date: 17 July 2025 Doc Ref: ES2202-ME16_v100 Revision: 1.00 RELEASE Overview This document contains the external photographs of the Etherstack XBR5100 fully integrated P25 base station transceiver equipment. Model: XBR5100D5HI FCC ID: 2ADAKXBR5100D5HI IC: 9487A-XBR5100D5HI Doc Ref: ES2202-ME16_v100 RELEASE Commercial-In-Confidence Page: 2 of 5 Date: 17 July 2025 © Etherstack Pty Ltd, 2025 XBR5100 Equipment Photo 1 – Front View Photo 2 – Front Perspective View Doc Ref: ES2202-ME16_v100 RELEASE Commercial-In-Confidence Page: 3 of 5 Date: 17 July 2025 © Etherstack Pty Ltd, 2025 Photo 3 – Rear View Photo 4 – Rear Perspective View Doc Ref: ES2202-ME16_v100 RELEASE Commercial-In-Confidence Page: 4 of 5 Date: 17 July 2025 © Etherstack Pty Ltd, 2025 Photo 5 – Top View Photo 6 – Bottom View Doc Ref: ES2202-ME16_v100 RELEASE Commercial-In-Confidence Page: 5 of 5 Date: 17 July 2025 © Etherstack Pty Ltd, 2025 Photo 7 – Right Side View Photo 8 – Left Side View End of Document.

Telephone: +1 (917) 661-4110 16 Madison Square W FL12 Suite 1200 New York, NY 10010 United States of America July 1, 2025 Federal Communications Commission Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 United States of America. ATTESTATION STATEMENT – Extended Frequency Range FCC ID: 2ADAKXBR5100D5HI To Whom It May Concern: To aid equipment authorization in other countries which accept the United States FCC Grant for Certification, Etherstack Inc. is requesting that the FCC lists the frequencies 136 -174 MHz, under FCC Part(s) 22, 74, 80 and 90 on the FCC Grant. For the FCC Rule Parts 22, 74, 80 and 90 applications, this radio is used in systems by Federal and Public Safety agencies including Police, Fire and Emergency Medical Services, etc. as indicated in the table below. Equipment programming is the responsibility of Authorized Service Personnel. Also, the operator cannot directly program the transmit frequencies using the normally accessible external controls. Etherstack acknowledges that operation on unauthorized frequencies is a violation of FCC rules. Etherstack acknowledges the inclusion of Grant note code "EF". Part 2.106 was used to construct the following table of frequency range capability intended for end users. Frequency (MHz} Part 22 Part 74 Part 80 Part 90 Federal 136.0000-150.0000 X 150.0000-150.8000 X 150.8000-152.8550 X X 152.8550-154.0000 X X 154.0000-156.2475 X X 156.2475-157.0375 X 157.0375-157.1875 X 157.1875-157.4500 X X 157.4500-161.5750 X X X X 161.5750-161.6250 X X 161.6250-161.7750 X X 161.7750-161.9625 X X 161.9625-162.0375 X 162.0375-173.2000 X X 173.2000-173.4000 X 173.4000-174.0000 X Etherstack Inc 2 Yours faithfully, Doug Chapman, Senior Vice President Etherstack Inc.

Telephone: +1 (917) 661-4110 16 Madison Square W FL12 Suite 1200 New York, NY 10010 United States of America July 1, 2025 Federal Communications Commission Authorization & Evaluation Division 7345 Oakland Mills Road Columbia, Maryland 21046 RE: Long-Term Confidentiality Requ…

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